Ea Play 1 month subscription

I have only the problem with buying Ea Play 1 month sunscription I can buy 12 month version but I want 1 month version, I am from Croatia so I bought PS gift card because it won't let me buy another way and add that money on my wallet but it doesnt let me pay and it says You need to add a payment method to your account to proceed, Do you want to add one now? After clicking Yes it says No content was found.

But above that message it says my Current wallet amount